Mechanical smoke exhaust system for building
By dividing the smoke exhaust zone of the building into independent smoke exhaust zones and setting up independent smoke exhaust devices, the use of horizontal smoke exhaust ducts is reduced, and the problems of occupancy of net height and increase floor height in the prior art are solved. , realizes a more economical and effective mechanical smoke exhaust system design.
Patent Information
- Application Number
- CN202421057677.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-15
- Publication Date
- 2025-01-14
- Estimated Expiration
- 2034-05-15
AI Technical Summary
When existing mechanical smoke exhaust systems meet the needs of multiple smoke exhaust partitions, they require larger horizontal smoke exhaust ducts, resulting in a reduced indoor net height and may increase building floor height, which is costly.
The smoke exhaust zone in the same vertical direction is divided into a smoke exhaust zone. Each smoke exhaust zone is equipped with an independent smoke exhaust device, including a fire smoke exhaust fan, a smoke exhaust pipe, a smoke exhaust branch pipe and a smoke exhaust fire valve, and smoke exhaust The vertical shaft runs from the first floor of the building to the roof, and the fire-fighting smoke exhaust fan is located on the roof to reduce the use of horizontal smoke exhaust ducts.
By adding smoke exhaust vertical pipes, the installation of horizontal smoke exhaust main pipes is avoided, the ceiling height is saved, the cost of increasing building floor height is reduced, and economic benefits are significantly improved.
Smart Images
Figure CN222352353U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a mechanical smoke exhaust system for buildings, belonging to the field of building fire smoke exhaust. Background Art
[0002] In indoor spaces where mechanical smoke exhaust is required, according to current national standards, the smoke exhaust volume in the horizontal direction is calculated as the maximum value of the sum of the smoke exhaust volumes of any two adjacent largest smoke exhaust zones within the fire partition; in the vertical direction, it is calculated according to the maximum smoke exhaust volume of the smoke exhaust system on each floor. When the smoke exhaust duct on a certain floor needs to support two or more smoke exhaust zones, the smoke exhaust volume is very large. For example, if the area of each smoke exhaust zone is 500m 2 Calculate, the smoke exhaust volume is 60000m 3 / h; if the exhaust area is increased to 1000m 2 , the smoke exhaust volume will be 120000m 3 / h. The wind speed in the smoke exhaust duct is limited to a maximum of 20m / s by the specification, so the smoke exhaust duct needs to be larger in size to meet the requirements of calculating the smoke exhaust volume.
[0003] exist Figure 1 In the mechanical smoke exhaust system for buildings of the prior art shown, the smoke exhaust port in the smoke exhaust partition is connected to the horizontal smoke exhaust duct. The horizontal smoke exhaust duct on each floor is responsible for two or more smoke exhaust partitions, and the horizontal smoke exhaust duct is connected to the vertical smoke exhaust duct in the smoke exhaust shaft. A smoke exhaust machine room is set on the roof, and the smoke exhaust fan is connected to the smoke exhaust vertical pipe. In this way, in order to meet the requirement that each smoke exhaust partition has a smoke exhaust port, the horizontal smoke exhaust duct will pass through most of the public areas and extend to each smoke exhaust partition. The horizontal smoke exhaust duct is large in size, which will reduce the indoor clear height. Utility Model Content
[0004] The purpose of the utility model is to overcome the above-mentioned deficiencies in the prior art and to provide a mechanical smoke exhaust system for buildings with a reasonable structural design, which does not affect the indoor net height and does not need to increase the floor height.
[0005] The technical solution adopted by the utility model to solve the above problems is: a mechanical smoke exhaust system for a building, the indoor space of the building is divided into a plurality of smoke exhaust zones; the characteristics are: the smoke exhaust zones in the same vertical direction are divided into a group, which is set as a smoke exhaust zone; each smoke exhaust zone is provided with a set of smoke exhaust devices, the smoke exhaust device includes a fire smoke exhaust fan, a smoke exhaust fire damper in front of the fan, a smoke exhaust vertical pipe, a smoke exhaust branch pipe, a smoke exhaust fire damper in the smoke exhaust zone, a smoke exhaust port, a smoke exhaust shaft and a special smoke exhaust machine room; the smoke exhaust shaft is provided with Located on one side of the smoke exhaust area, the smoke exhaust shaft runs through the first floor of the building to the roof, and the smoke exhaust riser is arranged in the smoke exhaust shaft; the special smoke exhaust machine room is arranged on the roof of the building, and a fire smoke exhaust fan is arranged in the special smoke exhaust machine room, and the inlet pipe of the fire smoke exhaust fan is connected with the smoke exhaust riser in the smoke exhaust shaft, and a fan front smoke exhaust fire damper is arranged on the inlet pipe; each smoke exhaust partition is provided with an independent smoke exhaust port, and the smoke exhaust port is connected with the smoke exhaust riser through a smoke exhaust branch pipe, and the smoke exhaust branch pipe is provided with a smoke exhaust partition smoke fire damper.
[0006] The smoke exhaust shaft and the smoke exhaust area of the utility model share a side wall.
[0007] The smoke exhaust port of the utility model is arranged on the side wall shared by the smoke exhaust shaft and the smoke exhaust area.
[0008] The utility model discloses a 280°C smoke exhaust fire damper in front of the fan.
[0009] The smoke exhaust fire damper of the smoke exhaust partition described in the utility model is a 280°C smoke exhaust fire damper.
[0010] Compared with the prior art, the utility model has the following advantages and effects:
[0011] By adding smoke exhaust vertical pipes to avoid the installation of horizontal smoke exhaust main pipes, the height occupied in the suspended ceiling can be reduced, providing convenient conditions for the comprehensive layout of mechanical and electrical pipelines; at the same time, it can avoid the situation where the building height is increased due to insufficient net height of indoor public areas; compared with traditional methods, only a number of smoke exhaust shafts and roof fire smoke exhaust fans are added, and the cost is far less than the cost of increasing the building height, which has significant economic benefits for multi-story buildings that require mechanical smoke exhaust. BRIEF DESCRIPTION OF THE DRAWINGS
[0012] Figure 1 The present invention is a schematic structural diagram of a mechanical smoke exhaust system for buildings in the prior art.
[0013] Figure 2 It is a structural schematic diagram of an embodiment of the utility model. DETAILED DESCRIPTION
[0014] The present invention will be further described in detail below with reference to the accompanying drawings and through examples. The following examples are provided to explain the present invention, but the present invention is not limited to the following examples.
[0015] See also Figure 2 The indoor space of the building is divided into a number of smoke exhaust partitions 9, and the smoke exhaust partitions 9 in the same vertical direction are grouped together as a smoke exhaust zone.
[0016] Each smoke exhaust area is provided with a set of smoke exhaust devices, which include fire smoke exhaust fans 1, smoke exhaust fire dampers 2 in front of the fans, smoke exhaust vertical pipes 3, smoke exhaust branch pipes 4, smoke exhaust fire dampers 5 in smoke exhaust zones, smoke exhaust ports 6, smoke exhaust shafts 7 and special smoke exhaust machine rooms 8. The connection relationship between the smoke exhaust device and the corresponding smoke exhaust area is:
[0017] The smoke exhaust shaft 7 is arranged on one side of the smoke exhaust area. The smoke exhaust shaft 7 and the smoke exhaust area share a side wall. The smoke exhaust shaft 7 runs through the first floor of the building to the roof. The smoke exhaust vertical pipe 3 is arranged in the smoke exhaust shaft 7. The smoke exhaust machine room 8 is arranged on the roof of the building. The smoke exhaust machine room 8 is provided with a fire smoke exhaust fan 1. The inlet pipe of the fire smoke exhaust fan 1 is connected to the top of the smoke exhaust vertical pipe 3 in the smoke exhaust shaft 7, and a fan front smoke exhaust fire damper 2 is arranged on this inlet pipe, which is interlocked with the fire smoke exhaust fan 1 and closed. The fan front smoke exhaust fire damper 2 is a 280℃ smoke exhaust fire damper, which automatically melts and closes when the smoke temperature reaches 280℃. Each smoke exhaust partition 9 is provided with an independent smoke exhaust port 6, which is arranged on the side wall shared by the smoke exhaust shaft 7 and the smoke exhaust partition 9. This smoke exhaust port 6 is only responsible for the corresponding smoke exhaust partition 9. The smoke exhaust port 6 is normally closed. When a fire occurs in the smoke exhaust partition 9, the corresponding smoke exhaust port 6 is opened and the interlocking fire smoke exhaust fan 1 is started. The smoke exhaust port 6 is connected to the smoke exhaust vertical pipe 3 in the smoke exhaust shaft 7 through the smoke exhaust branch pipe 4. The smoke exhaust branch pipe 4 is provided with a smoke exhaust partition smoke exhaust fire damper 5. The smoke exhaust partition smoke exhaust fire damper 5 is a 280℃ smoke exhaust fire damper, which automatically melts and closes when the smoke temperature reaches 280℃.
[0018] Each smoke exhaust zone 9 has an area of 500m 2 Since the smoke exhaust branch pipe 4 and the smoke exhaust port 6 are only responsible for one smoke exhaust zone 9, compared with the system responsible for two or more smoke exhaust zones, the smoke exhaust volume is 60000m 3 / h reduced to 30000m 3 / h, the diameter of the air duct is reduced from 1100mm to 750mm. The air volume of the smoke exhaust riser 3 is calculated based on the maximum smoke exhaust volume of all floors, which is also 30000m 3 / h, and the diameter of the air duct is also reduced to 750mm. The size and amount of air ducts are greatly reduced. In addition, the distance between the smoke exhaust shafts 3 is less than 30m, and the smoke exhaust port 6 only needs to be arranged on the side wall of the smoke exhaust partition 9 to meet the regulatory requirements, without the need to extend the horizontal air duct from the smoke exhaust shaft 7 to each smoke exhaust partition. In this way, there is no need to arrange large-sized horizontal smoke exhaust air ducts in the ceiling of the indoor public area, which saves the floor height in the ceiling, provides convenient conditions for the comprehensive layout of mechanical and electrical pipelines, and avoids increasing the building floor height to maintain the net height of the indoor public area.
[0019] In addition, it should be noted that the shapes and names of the parts and components of the specific embodiments described in this specification may be different, and the above content described in this specification is only an example of the structure of the utility model. All equivalent changes or simple changes made based on the structure, features and principles described in the patent concept of the utility model are included in the protection scope of the utility model patent. Technicians in the technical field of the utility model can make various modifications or supplements to the specific embodiments described or replace them in a similar manner, as long as they do not deviate from the structure of the utility model or exceed the scope defined by the claims, they should all fall within the protection scope of the utility model.
Claims
1. A mechanical smoke exhaust system for a building, wherein the indoor space of the building is divided into a plurality of smoke exhaust zones; characterized in that: The smoke exhaust zones in the same vertical direction are divided into a group and set as a smoke exhaust zone; each smoke exhaust zone is provided with a set of smoke exhaust devices, which include a fire smoke exhaust fan, a smoke exhaust fire damper in front of the fan, a smoke exhaust riser, a smoke exhaust branch pipe, a smoke exhaust fire damper in a smoke exhaust zone, a smoke exhaust port, a smoke exhaust shaft and a special smoke exhaust machine room; the smoke exhaust shaft is arranged on one side of the smoke exhaust zone, the smoke exhaust shaft runs through the first floor of the building to the roof, and the smoke exhaust riser is arranged in the smoke exhaust shaft; the special smoke exhaust machine room is arranged on the roof of the building, a fire smoke exhaust fan is arranged in the special smoke exhaust machine room, the inlet pipe of the fire smoke exhaust fan is connected to the smoke exhaust riser in the smoke exhaust shaft, and a smoke exhaust fire damper in front of the fan is arranged on the inlet pipe; each smoke exhaust zone is provided with an independent smoke exhaust port, which is connected to the smoke exhaust riser through a smoke exhaust branch pipe, and a smoke exhaust fire damper in the smoke exhaust zone is arranged on the smoke exhaust branch pipe.
2. The mechanical smoke exhaust system for a building according to claim 1, characterized in that: The smoke exhaust shaft and the smoke exhaust area share a side wall.
3. The mechanical smoke exhaust system for a building according to claim 2, characterized in that: The smoke exhaust port is arranged on the side wall shared by the smoke exhaust shaft and the smoke exhaust area.
4. The mechanical smoke exhaust system for a building according to claim 1, characterized in that: The smoke exhaust fire damper in front of the fan is a 280°C smoke exhaust fire damper.
5. The mechanical smoke exhaust system for a building according to claim 1, characterized in that: The smoke exhaust partition smoke exhaust fire damper is a 280°C smoke exhaust fire damper.